– Explanation: The passage specifically mentions the New Caledonian crow performing this feat. It does not claim all corvids can do this.
– Explanation: The passage states that scientists believed the smooth forebrain looked primitive and that without a neocortex, complex thought was impossible. the intelligence of corvids ielts reading answers
Recent neuroanatomical studies reveal that while corvids lack a neocortex, they possess a high density of neurons packed into their pallium (the forebrain region). In fact, some corvids have a higher percentage of neurons in their forebrain than many primates. The result is a brain that, while physically small, performs computational feats that rival those of great apes. One of the clearest indicators of higher intelligence is the ability to not just use a tool, but to modify one. The New Caledonian crow is the poster child for this behavior. In controlled experiments, these crows were presented with a stick too short to reach a piece of food and a piece of wire. Without any training, the crows bent the wire into a hook to retrieve the food. This spontaneous manufacture of a novel tool demonstrates causal reasoning —the ability to understand that modifying an object changes its physical effect on the environment. – Explanation: The passage specifically mentions the New
– Explanation: The passage states that tactical deception is a "hallmark of advanced intelligence" but does not claim corvids are the only non-humans to do this. One of the clearest indicators of higher intelligence
if the statement agrees with the information FALSE if the statement contradicts the information NOT GIVEN if there is no information on this
– Explanation: The passage says corvids have a "higher percentage of neurons in their forebrain than many primates," but it does not compare total neuron count to a chimpanzee specifically.